It suddenly struck me that that tiny pea, pretty and blue, was the Earth. I put up my thumb and shut one eye, and my thumb blotted out the planet Earth. I didn't feel like a giant. I felt very, very small.

Research is creating new knowledge.

I guess we all like to be recognized not for one piece of fireworks but for the ledger of our daily work.

There are people I'll always love to listen to, and I'm always ending up discovering new songs by them, which is crazy. Like Stevie Wonder.

Mystery creates wonder and wonder is the basis of man's desire to understand.

The one thing I regret was that my work required an enormous amount of my time, and a lot of travel.

Geologists have a saying - rocks remember.